gcc/ada/g-os_lib.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                          G N A T . O S _ L I B                           --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1995-2007, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  Operating system interface facilities
  35
  36 --  This package contains types and procedures for interfacing to the
  37 --  underlying OS. It is used by the GNAT compiler and by tools associated
  38 --  with the GNAT compiler, and therefore works for the various operating
  39 --  systems to which GNAT has been ported. This package will undoubtedly grow
  40 --  as new services are needed by various tools.
  41
  42 --  This package tends to use fairly low-level Ada in order to not bring in
  43 --  large portions of the RTL. For example, functions return access to string
  44 --  as part of avoiding functions returning unconstrained types.
  45
  46 --  Except where specifically noted, these routines are portable across all
  47 --  GNAT implementations on all supported operating systems.
  48
  49 --  See file s-os_lib.ads for full documentation of the interface
  50
  51 with System.OS_Lib;
  52
  53 package GNAT.OS_Lib renames System.OS_Lib;